## for case
#str = raw_input('enter a string:\n')
#for i in range(len(str)):
#   print str[i:i+1]

##while case
#count = 0;
#while count <= 10:
#    print 'loop #%d'  % count
#    count += 1

##swap case
#x,y = 3,9
#x,y = y,x
#print x,y

for i in range(8):
    if not i % 2:
        print i
